CN102439521A - Light-sensitive resin composition and a dry film comprising the same - Google Patents
Light-sensitive resin composition and a dry film comprising the same Download PDFInfo
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- CN102439521A CN102439521A CN2010800076299A CN201080007629A CN102439521A CN 102439521 A CN102439521 A CN 102439521A CN 2010800076299 A CN2010800076299 A CN 2010800076299A CN 201080007629 A CN201080007629 A CN 201080007629A CN 102439521 A CN102439521 A CN 102439521A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/037—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polyamides or polyimides
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- Materials For Photolithography (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The present invention relates to: a light-sensitive resin composition which not only can be developed using an alkaline aqueous solution and does not increase the temperature required for curing and the like, but also exhibits various physical properties appropriate for use as the covering film of a printed wiring board or a laminated body for a semiconductor; and to a dry film comprising the same. The light-sensitive resin composition comprises: (A) a polyamic acid comprising a polymer of one or more type of diamine compound and one or more type of acid dianhydride; (B) a photopolymerisable compound having at least one polymerisable, ethylenically unsaturated bond within the molecule; and (C) a photopolymerization initiator.
Description
Technical field
The present invention relates to photosensitive resin composition and the dry film that comprises said photosensitive resin composition.More specifically; The present invention relates to a kind of photosensitive resin composition, it can develop by enough alkaline aqueous solutions, when curing waits, does not need high temperature; And have the coverlay that is applicable to printed circuit board (PCB) or semiconductor character, and the dry film that comprises said photosensitive resin composition with layered product.
Background technology
Polyimide or its precursor are used as the coverlay of the base material film of printed circuit board (PCB), extensive integrated semiconductor device or printed circuit board (PCB) etc., because they have good permanance, thermotolerance, anti-flammability and machinery and electrical properties.
For example; In flexible PCB; Polyimide film is used as the base material film that the copper (Cu) with the copper-clad laminate that forms the conducting channel pattern on it (Copper Clad Laminate: hereinafter referred to as CCL) uses, or with acting on the coating film (being coverlay) of protecting the conducting channel pattern and strengthening bending resistance.This coating film is processed through perforation in advance, is laminated on the CCL surface that is formed with circuit through pressure sintering then.Yet, because therefore electronics miniaturization or multifunction etc. are used for the densification more of printed circuit board (PCB) needs, circuit miniaturization more wherein.Yet,,, satisfy thus in the densification of miniaturization or printed circuit board (PCB) of circuit and have restriction so accurately the location is difficult because the coating film is positioned the mode tiering of the circuit on the CCL then in advance through perforation by the operator.
The someone attempts through adopting photolithography to solve these problems with photosensitive resin composition recently.Under this trial, photosensitive resin composition hot pressing on the circuit of CCL, is made public according to pattern, and develop and form pattern structure, can pierce through pore by this way more accurately and therefore can satisfy the demand of the miniaturization etc. of circuit.
In this, known most of photosensitive resin composition all can be used for this type purposes, need to use flammable organic solvents or toxic solvent as developing solution, but this kind solvent possibly cause the problem on job stability or the environment.Therefore, recently, the photosensitive resin composition that always need use alkaline aqueous solution to develop.
In addition; The effective holding circuit in order photosensitive resin composition to be used to form aforesaid coating film, the dry film of processing by said photosensitive resin or its cured article need satisfy to welding thermotolerance, folding resistance (fragility and bending resistance), chemical-resistant, exhausted electrically, the requirement of multiple character such as anti-flammability.
Yet, in the known photosensitive resin composition, do not have the enough alkaline aqueous solution developments of ability and satisfy composition simultaneously in this area the requirement of all above-mentioned character.
In order to handle these problems, the someone attempts to have carried out the research based on the photosensitive resin composition of polyimide.This is because polyimide is because of satisfying the protection that thermotolerance, bending resistance or insulativity once were used to circuit.Although carried out this trial,, have with limit when being used to form circuit protection films such as described coating film based on the photosensitive resin composition of polyimide.
At first, the photosensitive resin composition that comprises polyimide itself is unfavorable for the formation of film, and therefore this photosensitive resin composition need comprise the precursor of polyimide, for example polyamic acid.In the case, after photosensitive resin composition formation pattern, make polyamic acid carry out polymerization, and known polyamic acid need about 350 ℃ high temperature just can become polyimide in this area with formation coating film.Can cause the oxidation and the deterioration of the copper circuit that is prone to be heated when carrying out polymerization through being heating and curing of this high temperature, therefore not preferred.In addition, photosensitive circuit diaphragms such as coating film should be filled the space between the fine pattern of circuit, but polyimide is difficult to realize this filling function.In addition, this photosensitive resin composition based on polyimide is difficult to develop with alkaline aqueous solution, therefore still has the shortcoming of described job stability or environment aspect.
Explanation of the present invention
Technical purpose
The present invention provides a kind of photosensitive resin composition, and its available alkaline aqueous solution develops, and solidifying to wait does not need high temperature, and has all coverlays that are applicable to printed circuit board (PCB) or the semiconductor character with layered product.
In addition, the present invention provides a kind of dry film that comprises said photosensitive resin composition and forms method of patterning with said photosensitive resin composition.
In addition, the present invention provides the printed circuit board (PCB), flexible PCB or the semiconductor that are obtained by said dry film to use layered product.
Technical scheme
The present invention provides a kind of photosensitive resin composition, and it comprises: (A) polyamic acid, and it comprises the diamine compound of at least a compound that contains following Chemical formula 1 and the polymkeric substance of at least a acid dianhydride; (B) compound of photopolymerization contains at least one polymerisable ethylenic unsaturated link in its molecule; (C) photoinitiator:
[Chemical formula 1]
In Chemical formula 1, X
1To X
4Be-O-or NR ' that R ' is hydrogen or C1 to C3 alkyl group independently of one another independently of one another; R
1Be the tetravalence alicyclic hydrocarbon group of C5 to C18, perhaps the tetravalence aromatic hydrocarbon group of C6 to C18; R
2And R
3Be the alkylidene group of C1 to C6 independently of one another; R
4And R
5Be the alkyl group of hydrogen or C1 to C6 independently of one another; And Ar
1And Ar
2Be the arylene group of C6 to C18 independently of one another.
In the compound of Chemical formula 1, X
1To X
4Can be-O-; R
1Can be the tetravalence aromatic hydrocarbon group of C6 to C10; R
2And R
3Can be the alkylidene group of C1 to C3 independently of one another; R
4And R
5Can be the alkyl group of hydrogen or C1 to C3 independently of one another; And Ar
1And Ar
2Can be the arylene group of C6 to C10 independently of one another.Preferably, the compound of Chemical formula 1 can be the compound of following Chemical formula 2, and it can be abbreviated as HEMA-DB:
[Chemical formula 2]
In addition, the present invention provides the dry film that comprises said photosensitive resin composition.
In addition, the present invention provides the formation method of patterning, and it may further comprise the steps: make said dry film exposure; With alkaline aqueous solution said dry film is developed then.
In addition, the present invention also provides printed circuit board (PCB), flexible PCB and the semiconductor of the cured article that comprises said dry film to use layered product.
Hereinafter will describe the photosensitive resin composition and the dry film of the specific embodiments according to the present invention.
Photosensitive resin composition
One embodiment of the invention provide a kind of photosensitive resin composition, and it comprises: (A) polyamic acid, and it comprises the diamine compound of at least a compound that contains following Chemical formula 1 and the polymkeric substance of at least a acid dianhydride; (B) compound of photopolymerization contains at least one polymerisable ethylenic unsaturated link in its molecule; (C) photoinitiator:
[Chemical formula 1]
In Chemical formula 1, X
1To X
4Be-O-or NR ' that wherein R ' is hydrogen or C1 to C3 alkyl group independently independently of one another; R
1Be the tetravalence alicyclic hydrocarbon group of C5 to C18 or the tetravalence aromatic hydrocarbon group of C6 to C18; R
2And R
3Be the alkylidene group of C1 to C6 independently of one another; R
4And R
5Be the alkyl group of hydrogen or C1 to C6 independently of one another; Ar
1And Ar
2Be the arylene group of C6 to C18 independently of one another.
Said photosensitive resin composition comprises the precursor polyamic acid of compound and the photoinitiator and the polyimide of photopolymerization.Said polyamic acid is specific diamine compound, and promptly the polymkeric substance of the compound of Chemical formula 1 and acid dianhydride for example is equivalent to condensed polymer.Experiment that the inventor carries out shows that the photosensitive resin composition that comprises this polyamic acid can form required pattern through following steps: it is coated on base material and makes its exposure, makes its development with alkaline aqueous solution then.Therefore, photosensitive resin composition of the present invention can solve the problem about job stability or environment aspect of prior art.
In addition, the imidization of said polyamic acid (promptly solidify) can be carried out with the preparation polyimide film being about under 150 to 230 ℃ the lower temperature.Therefore; Photosensitive resin composition of the present invention can reduce the oxidation of circuit or the concern of deterioration widely, and circuit protection film or the semiconductor of coverlay (coating film), flexible PCB that can be preferably used for printed circuit board (PCB) is with interlayer dielectric (interlayer dielectrics) purposes of layered product.
In addition; As confirming through following examples; When photosensitive resin composition of the present invention is coated, patterning, when solidifying to form film then; Find that this film demonstrates the character of good filling circuit space (be lamination filling property afterwards, hereinafter is also referred to as " fillibility behind the lamination "), thermotolerance, bending resistance, insulativity, chemical-resistant etc.Therefore, it can be preferably used for forming the coverlay (being the coating film) of printed circuit board (PCB) or the circuit protection film purposes of flexible PCB.
The existence of the vinyl segment of photopolymerization or the substituent type that connects on it are relevant in described advantageous property and the polyamic acid.In other words, this vinyl segment makes polyamic acid and other monomer (the for example compound of photopolymerization) that adds in the composition form covalent bond.Final is predicted as, and between monomer and polyamic acid (or polyimide), forms the firm interpenetrating polymer network (IPN, Interpenetrating Polymer Network) that chemical bond combines.Therefore, think that the cured article or the film that are obtained by photosensitive resin composition of the present invention can demonstrate improved character.
About this, korean patent publication 2002-0042733 discloses some diamines and acid dianhydride, and polyamic acid and thus obtained polyimide.Yet disclosed content is only mentioned the photosensitive resin composition that comprises polyimide, and does not mention or hint the composition that comprises its precursor (being polyamic acid).And the photosensitive resin composition that disclosed content does not have hint to comprise polyamic acid can preferably be used as the coverlay of printed circuit board (PCB).
In addition, diamine compound and polyamic acid such as this patent be disclosed to have the cinnamate structure, wherein is substituted or unsubstituted phenyl is connected in the R that is equivalent to Chemical formula 1
4And R
5The position, do not contain initiating agent and that photoinduction takes place is crosslinked.Therefore on structure and characteristic with composition according to embodiments of the present invention in contained polyamic acid different, be connected with the alkyl group of hydrogen or C1 to C3 in the polyamic acid of the present invention, and interact with photoinitiator.In addition, because this difference, disclosed polyamic acid demonstrates the character that is different from embodiment of the present invention, and estimates the purposes that it is difficult to use in the photosensitive resin composition of embodiment of the present invention or is used to form the coverlay of printed circuit board (PCB).
Below, will carry out detailed explanation to each component of the photosensitive resin composition of embodiment of the present invention.
Polyamic acid
Polyamic acid (Polyamic Acid) as the precursor of the polyimide of photosensitive resin composition of the present invention is the polymkeric substance of at least a diamine compound and at least a acid dianhydride compound; For example be equivalent to condensed polymer, must comprise the compound of Chemical formula 1 as said diamine compound.
Particularly, in the compound of Chemical formula 1, can preferably use wherein X
1To X
4Respectively do for oneself-O-; R
1Tetravalence aromatic hydrocarbon group for C6 to C10; R
2And R
3Be the alkylidene group of C1 to C3 independently of one another; R
4And R
5Be the alkyl group of hydrogen or C1 to C3 independently of one another; And Ar
1And Ar
2Be the compound of the arylene group of C6 to C10 independently of one another, and more preferably use the compound (HEMA-DB) of following Chemical formula 2:
[Chemical formula 2]
Except the compound of Chemical formula 1, can use various diamine compounds simultaneously, and comprise at least a p-phenylenediamine (PPD) (p-PDA), the m-phenylene diamine (m-PDA), 4 of being selected from as the example; 4 '-oxygen base diphenylamine (4; 4 '-ODA), 3,4 '-oxygen base diphenylamine (3,4 '-ODA), 2; 2-two (4-[4-amino-benzene oxygen]-phenyl) propane (BAPP), 1; 3-two (4-amino-benzene oxygen) benzene (TPER), 1,4-two (4-amino-benzene oxygen) benzene (TPE-Q) and 2, the compound of 2-two (4-[3-amino-benzene oxygen] phenyl) sulfone (m-BAPS).
In addition, in order to control the modulus of the film that obtains by photosensitive resin composition of the present invention,, also can use the silicon diamine compound of chemical formula 3 together except using above-mentioned diamine compound:
[chemical formula 3]
In chemical formula 3, R
6To R
9Be aliphatic hydrocarbon group, phenyl group or the methoxy group of C1 to C12 independently of one another, d is 1 to 5 integer, and k is 1 to 20 integer.
In addition, for the acid dianhydride of above-mentioned diamine compound reaction, any acid dianhydride that can be used for forming polyamic acid can use without restriction.The instance of said acid dianhydride comprises at least a PMDA, 3 that is selected from, 3 '-4,4 '-biphenyl tetracarboxylic dianhydride (BPDA), 3; 3 ', 4,4 '-benzophenone tetracarboxylic dianhydride, 4; The two phthalic anhydrides (ODPA), 4,4 ' of 4 '-oxygen base-(4,4 '-isopropyl diphenyl oxygen base) two phthalic anhydrides, 2; The compound of 2 '-two-(3,4-dicarboxyl phenyl) hexafluoropropane dianhydride and ethylene glycol bisthioglycolate dehydration benzenetricarboxylic acid ester (TMEG).
Said polyamic acid can be through method preparation well known in the art.For example, said polyamic acid can be through the preparation of following method: diamine compound (the for example compound of Chemical formula 1) is dissolved in solvent, in gained solution, adds the acid dianhydride compound, react (for example polycondensation) and preparation polyamic acid then.Preferably make the reaction between diamine compound and the acid dianhydride start from 0 to 15 ℃ temperature, carry out up to completion under the temperature in 10 to 40 ℃ scope afterwards, reacted usually about 24 hours.In this reaction, also preferably make mol ratio between said diamine compound and the acid dianhydride in 1: 0.9 to 1: 1.1 scope to obtain said polyamic acid.If the mol ratio of diamine compound and acid dianhydride is lower than 1: 0.9, then the molecular weight of said polyamic acid reduces too big and polyimide that be difficult to obtain to have excellent in mechanical properties.On the contrary, if the mol ratio of diamine compound and acid dianhydride is higher than 1: 1.1, then the viscosity of said photosensitive resin composition improves too big and is difficult to provide required various operations in coating and other steps.
The weight-average molecular weight of said polyamic acid is preferably 5000 to 300000, and more preferably 8000 to 200000.If the weight-average molecular weight of said polyamic acid is lower than 5000, then the molecular weight of the viscosity of photosensitive resin composition or polyamic acid reduces too greatly, might cause making the character deterioration of the polyimide of acquisition.In addition, if the weight-average molecular weight of said polyamic acid is higher than 300000, then the viscosity of photosensitive resin composition excessively increases, so it handles very difficulty.
In addition, as the solvent of the preparation that is used for said polyamic acid, can use toluene, N-Methyl pyrrolidone (N-methylpyrrolidinone; NMP), DMAC N,N (N, N-dimethylacetamide; DMAc), tetrahydrofuran (tetrahydrofurane; THF), N, dinethylformamide (N, N-dimethylformamide; DMF), dimethyl sulfoxide (DMSO) (dimethylsulfoxide; DMSO), cyclohexane (cyclohexane), acetonitrile (acetonitrile), and composition thereof at least a.
The compound of photopolymerization
The compound of the photopolymerization that comprises in the photosensitive resin composition according to one embodiment of the invention has at least one polymerisable ethylenic unsaturated link in its molecule.The compound of this photopolymerization can use the potpourri of (methyl) acrylate compounds of containing the two keys of at least one C-C or two or more this type (methyl) acrylate compounds.
For example, as the compound of photopolymerization, can use the two keys that contain two photopolymerizations or contain at least one two key and (methyl) acrylate compounds of at least one hydroxyl or cycloalkyl groups.More specifically; Can use the acrylic ester or the polyfunctional acrylic ester of simple function; And in order after film forms, to obtain compatibility and good properties, can use to contain in the various functional groups (for example oh group, cycloalkyl groups etc.) acrylate compounds of at least one.In addition, in order to make final cured article have good properties and to keep cohesive, can use acrylic ester through the epoxy radicals modification to the copper coating.
Said two or more (methyl) acrylate compounds and the polyamic acid that contains an above carbon-to-carbon double bond demonstrates good compatibility.In addition, owing to comprise two or more (methyl) acrylate compounds, can realize alkaline aqueous solution is had the photosensitive resin composition of good development capability and good photosensitivity.In addition, when said photosensitive resin composition was processed into dry film, its modulus when heat-treating reduced, and added and have flowability man-hour carrying out heat lamination, with fillibility behind the lamination that improves the no nuniform circuit pattern.Therefore, under lower temperature, also can carry out heat lamination processing.The dry film that is obtained by the photosensitive resin composition that comprises (methyl) acrylate compounds with cycloalkyl groups can improve cohesive and the hydrolytic resistance with the copper coating.
(methyl) acrylic ester as carbon-to-carbon double bond with two photopolymerizations; (methyl) acrylate compounds of EO or PO modification preferably, it comprises: the A-BPE-10, A-BPE-20, A-BPE-30, BPE-500 and the BPE-900 that are produced by NK Ester; By Shin-Nakamura chemical, Co., Ltd. or Kongyoungsa, (methyl) acrylic ester, (methyl) acrylic ester of Bisphenol F EO modification and (methyl) acrylic ester of PO modification of the bisphenol-A EO modification that Inc. produces; By Stomer, Co., SR-480, SR-602 and CD-542 that Ltd. makes; Deng.
In addition; (methyl) acrylate compounds as the carbon-to-carbon double bond with two photopolymerizations can use triethylene glycol diacrylate, neopentylglycol diacrylate, 1,6 hexanediol diacrylate, 3-methyl isophthalic acid; 5-pentanediol diacrylate, 2-butyl-2-ethyl-1; Ammediol diacrylate, 1,9-nonanediol diacrylate, polyethyleneglycol diacrylate are by Kongyoungsa; Inc. PEG#200 diacrylate, PEG#400 diacrylate or the PEG#600 diacrylate produced, etc.
As (methyl) acrylic ester of carbon-to-carbon double bond with at least one photopolymerization and oh group, can use ylmethyl acrylic acid 2-hydroxyl ethyl ester (HEMA), methacrylic acid 2-hydroxypropyl acrylate, 2-hydroxy acrylate, acrylic acid 2-hydroxypropyl acrylate, methacrylic acid 2-hydroxyl butyl ester; The phenyl glycidyl ether acrylic ester (Nipponkayaku, Co., Ltd., R-128H), 1,6-hexanediol epoxy acrylate (Nipponkayaku, Co., Ltd., Kayarad R-167), Ebecryl 9695 etc.
(methyl) acrylate compounds as carbon-to-carbon double bond with at least one photopolymerization and cycloalkyl groups; Can use glycidyl compound; For example (methyl) glycidyl acrylate, by Shin-Nakamura chemical; Co., NK oligomer EA 1010 and EA-6310 that Ltd. produces, etc.
In having (methyl) acrylate compounds of two polymerizable carbon-to-carbon double bonds; Containing at least, the epoxy of two or more hydroxyls (methyl) acrylic ester is favourable; Because it has improved the hydrolytic resistance of final cured article and to the cohesive of copper coating; Strengthened dissolubility simultaneously, shortened development time alkaline aqueous solution.
In having (methyl) acrylate compounds of two polymerizable carbon-to-carbon double bonds; Containing at least, the epoxy of two or more oh groups (methyl) acrylic ester has NK oligomerEA-1020, EA-6320, EA-6340, Ebecryl 600; And by Nipponkayaku; Co., ZAA-205 and ZFA-266H that Ltd. produces, but do not have special qualification.
The compound of photopolymerization comprises within it with the content of 30 to 200 weight portions with respect to the said polyamic acid that is included in 100 weight portions in the photosensitive resin composition.If the content of the compound of photopolymerization is less than 30 weight portions, the deterioration of fillibility behind then might cause developing character and the lamination.If it surpasses 200 weight portions, then might cause the reduction of the engineering properties that comprises folding resistance of thermotolerance reduction or film.
Photoinitiator
Above-mentioned photosensitive resin composition comprises photoinitiator.Photoinitiator comprises within it with the content of 0.3 to 10 weight portion with respect to the said polyamic acid that is included in 100 weight portions in the photosensitive resin composition.If the amount of photoinitiator is lower than 0.3 weight portion, then the photocuring degree of participation of photoinitiator reduces.If the content of photoinitiator is higher than 10 weight portions, the character of the film that is then obtained by said photosensitive resin composition maybe be owing to have neither part nor lot in residue group and the deterioration of curing reaction.
For photoinitiator; Can use acetophenone compound; For example 2-hydroxy-2-methyl-1-phenyl-propane-1-ketone, 1-(4-isopropyl phenyl)-2-hydroxy-2-methyl propane-1-ketone, 4-(2-hydroxyl-oxethyl)-phenyl-(2-hydroxyl-2-propyl group) ketone, 1-hydroxyl-cyclohexyl-phenyl ketone, diphenylhydroxyethanone methyl ether, diphenylhydroxyethanone ethylether, diphenylhydroxyethanone isobutyl ether, diphenylhydroxyethanone butyl ether, 2,2-dimethoxy-2-phenyl acetophenone, 2-methyl-(4-methyl sulfenyl) phenyl-2-morpholine-1-propane-1-ketone, 2-benzyl-2-dimethylamino-1-(4-morpholino phenyl)-Ding-1-ketone or 2-methyl isophthalic acid-[4-(methyl sulfenyl) phenyl]-2-morpholino propane-1-ketone etc.; The diimidazole compound, for example 2,2-two (2-chlorphenyl)-4,4 ', 5,5 '-tetraphenyl diimidazole, 2; 2 '-two (Chloro-O-Phenyl)-4,4 ', 5,5 '-four (3,4, the 5-trimethoxyphenyl)-1; 2 '-diimidazole, 2,2 '-two (2, the 3-dichlorophenyl)-4,4 ', 5,5 '-tetraphenyl diimidazole or 2; 2 '-two (Chloro-O-Phenyl)-4,4 ', 5,5 '-tetraphenyl-1,2 '-diimidazole etc.; Triaizine compounds, for example 3-{4-[2,4-two (trichloromethyl)-s-triazine-6-yl] phenyl sulfenyl } propionic acid, 3-{4-[2; 4-two (trichloromethyl)-s-triazine-6-yl] the phenyl sulfenyl } propionic acid, 1,1,1; 3,3,3-hexafluoro isopropyl-3-{4-[2; 4-two (trichloromethyl)-s-triazine-6-yl] the phenyl sulfenyl } propionic ester, ethyl-2-{4-[2; 4-two (trichloromethyl)-s-triazine-6-yl] the phenyl sulfenyl } acetic acid esters, 2-epoxy ethyl-2-{4-[2,4-two (trichloromethyl)-s-triazine-6-yl] phenyl sulfenyl } acetic acid esters, cyclohexyl-2-{4-[2,4-two (trichloromethyl)-s-triazine-6-yl] phenyl sulfenyl } acetic acid esters, benzyl-2-{4-[2; 4-two (trichloromethyl)-s-triazine-6-yl] the phenyl sulfenyl } acetic acid esters, 3-{ chloro-4-[2; 4-two (trichloromethyl)-s-triazine-6-yl] the phenyl sulfenyl } propionic acid, 3-{4-[2,4-two (trichloromethyl)-s-triazine-6-yl] phenyl sulfenyl } propionamide, 2,4-two (trichloromethyl)-6-is to methoxyl-styrene-s-triazine, 2; 4-two (trichloromethyl)-6-(1-is to dimethylamino phenyl)-1,3-butadiene base-s-triazine or 2-trichloromethyl-4-amino-6-are to methoxyl-styrene-s-triazine etc.; Japan Chiba, Co., the oxime compound that Ltd. produces, for example CGI-242 and CGI-124; The phosphine oxide compound, two (2,4,6-trimethyl-benzoyl) phenyl phosphine oxides, two (2,6-dimethoxy-benzoyl)-2,4 for example, 4-trimethyl-amyl group-phosphine oxide etc.In addition, can use any photoinitiator that can be used for photosensitive resin composition without restriction.The instance of the commercially available photoinitiator that gets comprises Irgacure
TM651, Irgacure
TM819, Irgacure
TM369 etc.
Except above-mentioned three kinds of components, also can comprise solvent according to the photosensitive resin composition of one embodiment of the invention, and it also can comprise adjuvant, for example photocrosslinking sensitizer, curing accelerator, fire retardant, foam-breaking agent, even paint, anti-gelling agent etc.Below, will specify these solvents or adjuvant.
Photocrosslinking sensitizer/curing accelerator
Can comprise the curing accelerator that promotes the photocrosslinking sensitizer that free radical generates and/or promote to solidify as helper component in the photosensitive resin composition of the present invention.These components contents are with respect to the above-mentioned polyamic acid of 100 weight portions, and the content with 0.01 to 10 weight portion comprises within it respectively, and preferably the content with 0.1 to 5 weight portion comprises within it.If exceed this scope, sensibilization or these components that just can not suitably obtain photocrosslinking can have a negative impact to development character.
As the photocrosslinking sensitizer, can use benzophenone cpd, for example benzophenone, 4; 4-two (dimethylamino) benzophenone, 4,4-two (diethylamino) benzophenone, 2,4; 6-trimethyl aminobenzophenone, methyl-o-benzoyl yl benzoic acid ester, 3,3-dimethyl-4-methoxy benzophenone or 3,3; 4,4-four (t-butylperoxy-carbonyl) benzophenone etc.; Fluorenone compound, for example 9-Fluorenone (fluorenone), 2-chloro-9-Fluorenone, 2-methyl-9-Fluorenone etc.; The thioxanthones compound, thioxanthones (thioxanthone), 2 for example, 4-diethyl-thioxanthones, 2-chloro-thioxanthones, 1-chloro-4-propoxyl group-thioxanthones, isopropyl thioxanthone or diisopropyl thioxanthones etc.; Xanthone compound, for example xanthone (xanthone), 2-methyl xanthone etc.; Anthraquinone compounds, for example anthraquinone, 2-methyl-anthraquinone, 2-EAQ, tert-butyl group anthraquinone, 2,6-two chloro-9,10-anthraquinone etc.; The acridine compound, 9-phenylacridine (acridine), 1 for example, 7-two (9-acridinyl) heptane, 1,5-two (9-acridinyl pentane), 1,3-two (9-acridinyl) propane etc.; Dicarbonyl compound, benzyl, 1,7 for example, 7-trimethyl-two ring [2,2,1] heptane-2,3-diketone, 9,10-phenanthrenequione (penanthrenequinone) etc.; The phosphine oxide compound, for example 2,4,6-trimethylbenzoyl diphenyl phosphine oxide, two (2,6-dimethoxy benzoyl)-2,4,4-tri-methyl-amyl-phosphine oxide etc.; Benzoic acid ester compounds, for example methyl-4-(dimethylamino) benzoic ether, ethyl-4-(dimethylamino) benzoic ether, 2-n-butoxy ethyl-4-(dimethylamino) benzoic ether etc.; Amino synergist compound, for example 2,5-two (4-diethylamino benzal) cyclopentanone, 2,6-two (4-diethylamino benzal) cyclohexanone, 2,6-two (4-diethylamino benzal)-4-methyl-cyclopentanone etc.; Coumarin compound, for example 3,3-carbonyl two-7-(diethylamino) cumarin, 3-(2-[4-morpholinodithio base)-7-(diethylamino) cumarin, 3-benzoyl-7-(diethylamino) cumarin, 3-benzoyl-7-methoxyl-cumarin or 10,10-carbonyl-two [1; 1,7,7-tetramethyl-2,3; 6,7-tetrahydrochysene-1H, 5H; 11H-C1]-benzopyranyl [6,7,8-ij]-quinolizine-11-ketone etc.; With the chalcone compound, for example 4-diethylamino chalcone, 4-azido benzylidene acetophonone etc.; 2-benzoyl methylene, 3-methyl-b-aphthothiazoles quinoline, etc.
The representative example of curing accelerator can comprise the heteroaromatic amines, can use it at least aly to be selected from unsubstituted or by the pyridine of the hydrocarbyl substituted of C3 to C12 (pyridine); Triazole (triazole); Imidazoles (imidazole); Quinoline (quinoline); Triazine (triazine); And the compound of derivant.
Particularly, can use imidazoles, benzimidazole, 1-methyl-imidazoles, 2-methyl-imidazoles, ethyl imidazol(e), 1,2; 4-triazole, 1,2,3-triazoles, 2-mercaptobenzoxazole, 2; 5-dimercapto-1,3,4-thiadiazoles, 2-mercaptobenzoxazole, 2; 5-dimercapto-1,3,4-thiadiazoles, 2-sulfydryl-4; 6-dimethyl aminopyridine, 3-pyridone, 4-pyridone, 2,4-lutidines, 4-pyridinemethanol, nicotine aldoxime, nicotimine aldoxime, pyridine carboxylic acid ethyl ester, ethyl isopicotinnate, 2,2 '-dipyridine, 4; 4 '-dipyridine, 3-methyl pyridazine (3-methylpyridazyle), quinoline, isoquinoline, phenanthridines, 2-mercaptobenzimidazole, 2-sulfydryl benzotriazole, phthalazines or 1,10-phenanthroline etc., but be not limited to this.
Fire retardant
Photosensitive resin composition of the present invention also can comprise fire retardant, for example phosphorus fire retardant.Said phosphorus fire retardant demonstrates compatibility in the liquid composite of compound that comprises polyamic acid, photopolymerization etc.In other words, phosphorus fire retardant can be given its anti-flammability in compatible with photosensitive resin composition of the present invention.This fire retardant is with respect to the general assembly (TW) meter of the solid matter except polyamic acid in the photosensitive resin composition, and with regard to the content ratio of phosphorus atoms, its ratio is 0.1 to 20wt%, more preferably is 0.5 to 5wt%.If the amount of phosphorus fire retardant is less than 0.1wt%, then it is difficult to obtain fire retardation.If surpass 20wt%, then the development character of said film and engineering properties maybe deteriorations.
As phosphorus fire retardant; Can use to comprise the compound that comprises (methyl) acrylic ester in phosphorus and the structure, and at least a in the phosphorus compound by the adduct preparation that contains at least one epoxy radicals or (methyl) acrylate group in this compound and the molecule.Particularly; KAYAMER PM-2), 2-hydroxyethyl methacrylic acid caprolactone phosphate (trade name: KAYAMER PM-21), 10-(2 can use 2-hydroxyethyl methacrylic acid phosphoric acid ester (trade name:; The 5-dihydroxy phenyl)-10H-9-oxa--10-phospho hetero phenanthrene-10-oxide (HCA-HQ), 9; The 10-dihydro-9-oxy is mixed-10-phospho hetero phenanthrene (phosphaphenanthrene)-10-oxide (HCA), etc.
As the compound that contains (methyl) acrylic ester in the molecule; Can use or use simultaneously two kinds or more kinds of following compound separately: (methyl) acrylic acid 2-hydroxyl ethyl ester, (methyl) benzyl acrylate, (methyl) acrylic acid phenoxy group-polyvinyl ester, methoxyl polypropylene glycol (methyl) acrylic ester, 2-hydroxypropyl (methyl) acrylic ester, (methyl) acryloyl group oxygen base ethyl hydrogen phthalic ester, 1,6-hexanediol two (methyl) acrylic ester, ethylene glycol bisthioglycolate (methyl) acrylic ester, two (methyl) acrylic acid methylene ester, neopentyl glycol two (methyl) acrylic ester, 2-hydroxyl propylene glycol two (methyl) acrylic ester, Isopropanediol two (methyl) acrylic ester and Isopropanediol two (methyl) acrylic ester.
Solvent
Above-mentioned photosensitive resin composition also can comprise the solvent as the medium of above-mentioned each component.For this kind solvent, can use the solvent of the compound, photoinitiator, phosphorus fire retardant etc. of the said polyamic acid of easy dissolving, photopolymerization.The solvent that preferred use can easily be evaporated in the coating procedure of photosensitive resin composition.In the photosensitive resin composition, with respect to 100 weight portions polyamic acid, the content of solvent is preferably 300 to 700 weight portions.
As said solvent, be preferably non-proton polar organic solvent.Particularly; Can use separately or use and be selected from following solvent: N-N-methyl-2-2-pyrrolidone N-, N-acetyl group-2-Pyrrolidone, N-benzyl-2-Pyrrolidone, N with two kinds or more kinds of potpourris; Dinethylformamide, DMAC N,N, dimethyl sulfoxide (DMSO), HMPA, N-acetyl group-epsilon-caprolactams, methylimidazole alkane ketone, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, gamma-butyrolacton 、 diox, dioxolanes, tetrahydrofuran, chloroform and methylene chloride.
Other adjuvant
In addition, in order to promote required coating procedure and solidification process, perhaps improve other character, said photosensitive resin composition can further comprise the for example adjuvant of foam-breaking agent, even paint, anti-gelling agent etc.The particular type of this type adjuvant and content thereof are as known in the art.
[dry film]
The dry film that comprises above-mentioned photosensitive resin composition is provided according to other embodiments of the present invention.This dry film can dry said photosensitive resin composition obtains through on carrier, apply also with known method.Preferably, bearer type should make that the photosensitive resin composition layer that applies on it is peelable, and has good transmittance.In addition, preferably said carrier surface height is smooth.
As carrier, can be for example polyethylene terephthalate, PEN, polypropylene, tygon, cellulose triacetate, cellulose diacetate, gather (methyl) alkyl acrylate, gather (methyl) acrylate copolymer, PVC, polyvinyl alcohol (PVA), polycarbonate, polystyrene, viscose paper, polyvinylidene chloride copolymer, polyamide, polyimide, vinyl chloride and vinyl acetate multipolymer, teflon, gather the plastic foil of trifluoro-ethylene etc.In addition, can use by the compound substance of two kinds or more kinds of material preparations wherein.Particularly preferably be polyethylene terephthalate with good transmittance.The thickness of carrier is preferably 5 to 150 μ m, more preferably 10 to 50 μ m.
The not special restriction of the painting method of photosensitive resin composition can be used following method, for example sprays coating, roller coat, spin coating, slot coated, compression coating, curtain coating, mould coating, the coating of coiling rod, scraper coating etc.The drying means of photosensitive resin composition is according to the type of each component and organic solvent and content thereof and different, but preferably carries out 30 seconds to 15 minutes at 60 to 100 ℃.
Through photosensitive resin composition of the present invention being coated on carrier and making its dry dry film for preparing, its thickness is preferably 5 to 95 μ m, more preferably 10 to 50 μ m.If its thickness is less than 5 μ m, then insulativity is not good.If thickness surpasses 95 μ m, then degree of separation reduces.
To explain in more detail that hereinafter this dry film is under the situation of not using the previous inflammable organic solvent that uses in this area, develop to form pattern with alkaline aqueous solution in the exposure back.For example, pattern can form through the method that may further comprise the steps: dry film is made public; Said dry film is developed.Therefore, dry film of the present invention can reduce the job stability that exists in a lot of photosensitive resin compositions about previous use or the problem of environment aspect.
In addition, through the film that obtains along with the said dry film of formation pattern cured, aspect such as fillibility, thermotolerance demonstrates excellent results behind lamination.In addition, said dry film can solidify (or imidization) under lower temperature, therefore also is preferably used for forming the coverlay of printed circuit board (PCB) or forms semiconductor with the interlayer dielectric in the layered product.
[printed circuit board (PCB)]
According to another embodiment of the invention, the dry film of the application of the invention is provided and the printed circuit board (PCB) for preparing.This printed circuit board (PCB) can comprise the cured article of dry film of the present invention.
For example for printed circuit board (PCB); Contract or the method for roll compaction with concora crush; Under 25 to 50 ℃ the temperature dry film of the present invention in advance behind the lamination (pre-lamination), can formed photosensitive film through vacuum lamination (vacuum lamination) under 60 to 90 ℃ temperature.In order to form the line of pore or thin width, dry film can use photomask to make public and form pattern.Exposure with film thickness and different, generally is preferably 100 to 1200mJ/cm according to the type of light source
2, more preferably 100 to 400mJ/cm
2Although electron beam, UV ray and X ray all can be used as dynamic ray, preferred UV ray.Can use high-pressure sodium lamp, low pressure mercury lamp, Halogen lamp LED etc. as light source.
After the exposure, developing process carries out with infusion process usually, and impregnated in the developing solution.Use alkaline aqueous solution as developing solution, for example sodium hydrate aqueous solution or aqueous sodium carbonate, and carry out using water washing after the developing process with alkaline aqueous solution.Afterwards, make said polyamic acid imines change into polyimide through heat treated, the temperature of heating is preferably the required temperature of imidization, in 150 to 230 ℃ scope.This moment is more effective to be to heat along with the process of suitable temperature curve through two steps to four steps heats up continuously, but according to circumstances, can under a stationary temperature, be cured.Can prepare printed circuit board (PCB) by this way, for example multilayer board etc.
[flexible PCB/semiconductor is used layered product]
According to another embodiment of the invention, the dry film of the application of the invention is provided and the flexible PCB and the semiconductor that prepare are used layered product.Said flexible PCB and semiconductor can comprise the cured article of dry film of the present invention with layered product.
It is identical to what printed circuit board (PCB) detailed with preceding text with the method for layered product that dry film of the present invention is coated on flexible PCB and semiconductor, and in addition, available conventional method prepares flexible PCB or semiconductor is used layered product.
Therefore, can obtain wherein dry film of the present invention as the diaphragm of flexible PCB or semiconductor circuit board or semiconductor equipment with the interlayer dielectric of layered product.
[beneficial effect of the present invention]
In the present invention; In order to give photosensitivity; The diamine compound that contains acryloyl group that has a new construction through use prepares the photosensitive precursor (being polyamic acid) of polyimide, and preparation comprises the photosensitive resin composition of the compound of this precursor and various photopolymerizations then.The final cured article character that is obtained by said composition is good; Particularly; Can the due care circuit also photosensitive film be provided or layered product, its satisfy welding thermotolerance after solidifying, folding resistance (fragility, bending resistance), chemical-resistant, exhausted electrically, performance such as anti-flammability.
In addition, photosensitive resin composition of the present invention can develop with alkaline aqueous solution, and the polyamic acid that wherein comprises can imidization under lower temperature.
Therefore, photosensitive resin composition of the present invention can be preferably used for various uses, for example be used for the different printing circuit board coverlay (coating film), be used for the circuit protection film of flexible PCB, or be used for the interlayer dielectric of semiconductor with layered product.
[embodiment]
Hereinafter is described function of the present invention and effect in further detail through specific embodiment.Yet following examples have been merely description of the invention and have proposed, and are not intended to limit the scope of claim of the present invention.
[synthetic embodiment]
1,4-two (4-amino benzoyl)-2,5-two (methacryl) second
Synthetic
Synthesis step through reaction equation 1 synthesizes above-mentioned monomer (HEMA-DB):
[reaction equation 1]
1.
1,4-dicarboxylic acid-2,5-two (methacryl) ethylamino benzonitrile acid esters (chemical substance A) Synthetic
In being furnished with three mouthfuls of round-bottomed flasks of stirrer, the methacrylic acid 2-hydroxyl ethyl ester (HEMA) of the PMDA of the 100g that packs into, 121g, the pyridine of 162g, the N-Methyl pyrrolidone (NMP) of 250g and the quinhydrones of 2g.Stir this solution 2 hours to carry out this reaction at 70 ℃.After confirming to react completely, the ethyl acetate that adds 800g is as solvent, adds the hydrochloric acid solution (10%) of 10g then and stirs 10 minutes.Remove salt and N-Methyl pyrrolidone with water washing then, and obtain the chemical substance A of step 1 through decompression distillation.
2.
1,4-diacid chloride-2,5-two (methacryl) ethylamino benzonitrile acid esters (chemical substance B) Synthetic
After the chemical substance A of the 100g that is obtained by step 1 is diluted in the methylene chloride of 200g, 15 ℃ cooling bath is provided.Afterwards through 1 hour dropping 100g phosphorus pentachloride.After reacting completely, the gained drips of solution is added in the hexane of 300g to remove unreacted phosphorus pentachloride, decompression distillation is to obtain the chemical substance B of step 2 then.
3.
1,4-two (4-nitro benzoyl)-2,5-two (methacryl) ethylamino benzonitrile acid esters (is changed Synthesizing substance C)
In being furnished with three mouthfuls of round-bottomed flasks of stirrer, pack into the 4-nitrophenol of 30g, the methylene chloride of 100g and the triethylamine of 23g provide 10 ℃ cooling bath.The chemical substance B of the 51g that is obtained by step 2 is diluted in the 100g methylene chloride, through 10 minutes the gained drips of solution is added in the prepared solution.Afterwards, at room temperature stirred this potpourri in addition one hour.After confirming to react completely, in products obtained therefrom, add 10g hydrochloric acid solution (5%) and stirred 10 minutes.Afterwards, through obtain the chemical substance C of step 3 with water washing and decompression distillation.
4.
1,4-two (4-amino benzoyl)-2,5-two (methacryl) ethylamino benzonitrile acid esters (is changed Learn the synthetic of material D)
In three mouthfuls of round-bottomed flasks, add chemical substance C, the isopropyl alcohol of 200g and the distilled water of 30g of 30g, slowly be heated to 50 ℃ then by step 3 acquisition.Then, in this potpourri, add 7mL hydrochloric acid and 30g iron powder and reacted 8 hours, the temperature with reaction solution remains on 70 ℃ simultaneously.After confirmation reacts completely, remove iron powder, then gained solution is carried out decompression distillation through heat filtering.Thus obtained product is dissolved in methylene chloride, then through using sodium hydroxide solution to remove remaining hydrochloric acid.Finally obtain final products with hexane and isopropyl alcohol and through recrystallization.
[preparation example]
The preparation of polyamic acid
Preparation example 1
In the four-hole round-bottomed flask of being furnished with thermometer, stirrer, nitrogen input porthole and powder dispense funnel (powder dispensing funnel), make the nitrogen flow therein; And with 4 of 38g, 4 '-oxygen base diphthalic anhydrides (ODPA) is scattered in the mixed solvent of toluene and dimethyl acetamide (weight ratio: 3: 7) of 490g.X-22-9409 (producing the diamines silicone compounds by Shinetsu Co.Ltd.) through adding 43g in 15 minutes then.At room temperature stirred afterwards 40 minutes; In said potpourri, add 4 of 19.35g, 4 '-oxygen base diphenylamine (4,4 '-ODA), 38g 1; The HEMA-DB that in above-mentioned synthetic embodiment, synthesizes of 3-two (4-amino-benzene oxygen) benzene (TPE-R) and 17.3g, and stir so that it is dissolved fully.Cool off said solution with 15 ℃ or lower temperature, and in said solution, slowly add 3,3 '-4 of 54g, 4 '-biphenyl tetracarboxylic dianhydride (BPDA) also stirs 24 hours, thereby obtains polyamide acid varnish.The solids content of said varnish solution is 30wt%, and its viscosity at room temperature is shown as 3200cp.
Preparation example 2
In the four-hole round-bottomed flask of being furnished with thermometer, stirrer, nitrogen input porthole and powder dispense funnel, make the nitrogen flow therein; And with 4 of 27.7g, 4 '-oxygen base diphthalic anhydrides (OPDA) is scattered in the mixed solvent of toluene and dimethyl acetamide (weight ratio 3: 7) of 350g.X-22-9409 (producing the diamines silicone compounds by Shinetsu Co.Ltd.) through adding 31.1g in 15 minutes then.At room temperature stirred afterwards 40 minutes, and in said potpourri, added 4 of 18.33g, 4 '-oxygen base diphenylamine (4,4 '-ODA) with 1 of 33.5g, 3-two (4-amino-benzene oxygen) benzene (TPE-R), and stir it is dissolved fully.Cool off said solution with 15 ℃ or lower temperature, and in said solution, slowly add 3,3 '-4 of 39.33g, 4 '-biphenyl tetracarboxylic dianhydride (BPDA) also stirs 24 hours, thereby obtains the polyamic acid of varnish form.The solids content of said varnish solution is 30wt%, and its viscosity at room temperature is shown as 3200cp.
Preparation example 3
In the four-hole round-bottomed flask of being furnished with thermometer, stirrer, nitrogen input porthole and powder dispense funnel, make the nitrogen flow therein; And with 4 of 91.8g, 4 '-oxygen base diphthalic anhydrides (OPDA) is scattered in the mixed solvent of toluene and dimethyl acetamide (weight ratio 3: 7) of 490g.X-22-9409 (producing the diamines silicone compounds by Shinetsu Co.Ltd.) through adding 42.45g in 15 minutes then.At room temperature stirred afterwards 40 minutes; In said potpourri, add 4 of 18.7g, 4 '-oxygen base diphenylamine (4,4 '-ODA), 36.5g 1; The HEMA-DB that synthesizes among the above-mentioned synthetic embodiment of 3-two (4-amino-benzene oxygen) benzene (TPE-R) and 20.5g, and stirring is dissolved it fully.Cool off said solution with 15 ℃ or lower temperature, and stir said solution and obtained polyamide acid varnish in 24 hours.The solids content of said varnish solution is 30wt%, and its viscosity at room temperature is shown as 3200cp.
Preparation example 4
In the four-hole round-bottomed flask of being furnished with thermometer, stirrer, nitrogen input porthole and powder dispense funnel, make the nitrogen flow therein; And with 4 of 31.6g, 4 '-oxygen base diphthalic anhydrides (OPDA) is scattered in the dimethyl formamide (weight ratio 3: 7) of 275g.X-22-9409 (producing the diamines silicone compounds by Shinetsu Co.Ltd.) through adding 22g in 15 minutes then.At room temperature stirred afterwards 40 minutes, and in said potpourri, added 1 of 42.6g, the HEMA-DB that synthesizes among the above-mentioned synthetic embodiment of 3-two (3-amino-benzene oxygen) benzene (APB-N) and 10.7g, and stirring is dissolved it fully.Cool off said solution with 15 ℃ or lower temperature, and in said solution, slowly add the PMDA (PMDA) of 9.5g and stir and obtained polyamide acid varnish in 24 hours.The solids content of said varnish solution is 30wt%, and its viscosity is shown as 3400cp in room temperature.
[embodiment 1 to embodiment 9]
The preparation of photosensitive resin composition
With respect to 100 weight portions by preparing the polyamide acid varnish that example 1,3 and 4 method obtains, be shown in each component in the table 1 and 2 based on the mixing ratio (weight portion) of solid constituent and mixing to obtain photosensitive resin composition.
[Comparative Examples 1]
With respect to 100 weight portions by preparing the polyamide acid varnish that example 2 method obtains, each component of expression in the table 1 is mixed to obtain photosensitive resin composition based on the mixing ratio (weight portion) of solid constituent.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative Examples 1 |
| Polyamic acid | Preparation example 1 | Preparation example 1 | Preparation example 1 | Preparation example 1 | Preparation example 1 | Preparation example 2 |
| PAA(30wt％) | 100 | 100 | 100 | 100 | 81.32 | 81.32 |
| BPE-900 | 20 | 20 | 20 | 20 | 16 | 16 |
| EA-1020 | 15 | 13 | 13 | 13 | 13 | 13 |
| DPEA-12 | 2 | 4 | - | - | 4 | 4 |
| GPO-303 | - | - | 4 | - | - | - |
| P-2M | - | - | - | 4 | - | - |
| RM-1001 | - | - | - | - | 4 | 4 |
| I651 | 0.88 | 0.88 | 0.88 | 0.88 | 0.88 | 0.88 |
| I819 | 0.59 | 0.59 | 0.59 | 0.59 | 0.59 | 0.59 |
| 1,2, the 4-triazole | 1.83 | 1.83 | 1.83 | 1.83 | 1.83 | 1.83 |
In table 1; PPA (Poly Amic Acid) is that solids content is the polyamic acid of 30wt%; BPE-900 is that (produced by Shinnakamura Chmicals Co.Ltd., EO=17) (as the compound of photopolymerization), EA-1020 are epoxy (methyl) acrylic ester (being produced by Shinnakamura Chemicals Co.Ltd.) (as the compound of photopolymerization) that comprises at least two oh groups to ethoxylation bisphenol-A methacrylate compound; DPEA-12 is that the dipentaerythritol acrylate of EO modification is (by Shinnakamura Chemicals Co.; Ltd. production) (as the compound of photopolymerization), GPO-303 are that (produced by Shinnakamura Chemicals Co.Ltd., n=3) (as the compound of photopolymerization), P-2M are the phosphate (being produced by Nipponkayaku Co.Ltd.) of methacrylic acid 2-hydroxyl ethyl ester to the propoxylated glycerol triacrylate; RM-1001 is acryloyl morpholine (being produced by Nipponkayaku Co.Ltd.); I651 and I819 are respectively Irgacure 651 and Irgacure 819, and it is a photoinitiator, and 1; 2, the 4-triazole is the product of Aldrich Co.Ltd..
Table 2
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 |
| Polyamic acid | Preparation example 1 | Preparation example 1 | Preparation example 3 | Preparation example 4 |
| PAA(30wt％) | 100 | 100 | 100 | 100 |
| BPE-900 | 0.45 | 0.45 | 0.45 | 0.45 |
| A-9300 | - | 0.1 | 0.1 | 0.1 |
| RM-1001 | - | 0.1 | 0.1 | 0.1 |
| EA-1020 | 0.2 | - | 0.35 | 0.35 |
| EA-6320 | - | 0.35 | - | - |
| ZFA-266H | 0.25 | - | - | - |
| R-115 | 0.1 | - | - | - |
| ITX | - | 0.005 | 0.005 | 0.005 |
| I651 | 0.02 | 0.02 | 0.02 | 0.02 |
| TPO | 0.03 | 0.03 | 0.03 | 0.03 |
| 1,2, the 4-triazole | 0.05 | 0.05 | 0.05 | 0.05 |
In table 2; A-9300 is three (2-hydroxyethyl) chlorinated isocyanurates (being produced by Shinnakamura Co.Ltd.); EA-6320 is the epoxy acrylate (being produced by Shinnakamura Co.Ltd.) of linear novolaks modification; R-115 is that the oligomeric diacrylate of bisphenol-A (by Nippon Kayarad Co., Ltd. produces), ZFA-266H are the linear novolaks modified epoxy acrylic ester of Bisphenol F (by Nippon Kayarad Co., Ltd. produce); And ITX is isopropyl thioxanthone (isopropylthioxanthon), is photosensitizer.
[Test Example]
The preparation of test sample
Being coated in the solution of the various photosensitive resin compositions that obtain as the thickness of base material film equably is on the polyethylene terephthalate film (being produced by Teijin Dupont Co.Ltd.) of 25 μ m.Then, the film of coating through with the hot-air convection exsiccator in 75 ℃ of dryings, having formed dry thickness afterwards is the photosensitive resin composition layer of 31 μ m.On this photosensitive resin composition layer, by roll compaction come the laminated polyethylene diaphragm (by Tamapoly Co., Ltd. produces, trade name: NF-15), with the light activated element (dry film) that obtains each embodiment and Comparative Examples.
From this dry film, remove after the diaphragm, dry film is positioned over the surface of the copper coating of the 2CCL that forms pattern, make it under 70 ℃, stand vacuum lamination 30 seconds, solidified 2 hours in the drying box under 180 ℃ blanket of nitrogen, then to its evaluation.For each film for preparing in embodiment and the Comparative Examples, measure character according to following evaluation method.
1. fillibility behind the lamination
Carry out said vacuum lamination (temperature: 70 ℃, pressure: 0.7MPa, vacuum time: 20 seconds, compression time: 40 seconds) afterwards, the fillibility of evaluated for film on circuit.
2. development property
Make the dry film of preparation on the copper coating, carry out vacuum lamination, with 350mJ/cm
2Make public, pass through then to confirm whether can realize development with the spacing (pitch) of L/S=50 μ m/50 μ m with after 30 ℃ aqueous sodium carbonate (1wt%) spray developing.
3. bond strength (cross-hatching)
After obtaining the final cured film of photosensitive resin composition through a series of processes on the copper-coated surface of 2CCL product, the cohesive of the final cured film of this photosensitive resin composition is estimated to draw a lattice adhesive tape method according to JISK5400.
4. bond strength
After obtaining the final cured film of photosensitive resin composition through a series of processes on the copper-coated surface, the cohesive of the final cured film of this photosensitive resin composition is measured according to JIS K5404.
5. (Curl) (2CCL) (degree of crook) curls
After obtaining the final cured film of photosensitive resin composition through a series of processes on the copper-coated surface of 2CCL product, be cut into 200mm * 200mm size, make it uprightly to measure the radius-of-curvature of film.
6. heat-resisting moist (PCT resistance)
After obtaining the final cured film of photosensitive resin composition through a series of processes on the copper-coated surface of 2CCL product; Be placed on following 5 hours of the high humility of 120 ℃ high temperature and 100% relative humidity, observe on the film that curls whether change color or interfacial dilation have taken place then.
7. welding thermotolerance
Dry film is faced up and makes dry film swim in temperature is during 288 ± 5 ℃ welding is bathed after 1 minute, and whether the visual observations dry film has unusually.
8. bendability
Said dry film through after vacuum lamination, exposure, development, the curing, is measured its bendability (JIS C6471) with MIT method (0.38R, 500g load) on the FCCL pattern of L/S=100 μ m/100 μ m.
9. chemical-resistant
At room temperature, with said film immersion in H
2SO
4In solution (10 (v/v) %), NaOH solution (10 (v/v) %) and the isopropyl alcohol (IPA) after 10 minutes, confirm whether peel off, variable color etc.
10. thermal expansivity (CTE)
After obtaining the final cured film of photosensitive resin composition through a series of processes on the copper-coated surface, be cut into the film that width is 5mm, it is separated with the copper coating.For the cured film that obtains by this way, measure the degrees of expansion of temperature-dependent film through using TMA thermo-mechanical analysis (thermal mechanical analysis).
For the evaluation result of embodiment and Comparative Examples film, be summarized in following table 3 and the table 4.
Table 3
Table 4
Find with 4 that with reference to table 3 film of embodiment has fillibility behind the good lamination, and aspects such as thermotolerance, heat-resisting moist, engineering properties, chemicals-resistant character are good, make its can be preferably as the coverlay of printed circuit board (PCB).In addition, said film can obtain through with alkaline aqueous solution the photosensitive resin composition of embodiment being developed, and shown in Test Example, though (about 180 ℃) imidization at a lower temperature and obtaining, also can indicator gauge 3 and 4 good character.
In contrast to this, the film that can confirm Comparative Examples is such as poor to properties such as the cohesive of substrate, heat-resisting moist, engineering properties, therefore is inappropriate for the purposes of the coverlay etc. of printed circuit board (PCB).
Claims (23)
1. photosensitive resin composition, it comprises:
(A) polyamic acid, it comprises the diamine compound of at least a compound that contains following Chemical formula 1 and the polymkeric substance of at least a acid dianhydride;
(B) compound of photopolymerization contains at least one polymerisable ethylenic unsaturated link in its molecule; With
(C) photoinitiator:
[Chemical formula 1]
In Chemical formula 1,
X
1To X
4Be-O-or NR ' that wherein R ' is the alkyl group of hydrogen or C1 to C3 independently of one another independently of one another;
R
1Be the tetravalence alicyclic hydrocarbon group of C5 to C18 or the tetravalence aromatic hydrocarbon group of C6 to C18;
R
2And R
3Be the alkylidene group of C1 to C6 independently of one another;
R
4And R
5Be the alkyl group of hydrogen or C1 to C6 independently of one another; And
Ar
1And Ar
2Be the arylene group of C6 to C18 independently of one another.
2. the photosensitive resin composition of claim 1, wherein in the compound of Chemical formula 1, X
1To X
4Respectively do for oneself-O-; R
5Tetravalence aromatic hydrocarbon group for C6 to C10; R
2And R
3Be the alkylidene group of C1 to C3 independently of one another; R
4And R
5Be the alkyl group of hydrogen or C1 to C3 independently of one another; Ar
1And Ar
2Be the arylene group of C6 to C10 independently of one another.
3. the photosensitive resin composition of claim 2, wherein the compound of Chemical formula 1 is the compound of following Chemical formula 2:
[Chemical formula 2]
4. the photosensitive resin composition of claim 1, it also comprises at least a adjuvant that is selected from photocrosslinking sensitizer, curing accelerator, fire retardant, foam-breaking agent, even paint and anti-gelling agent.
5. the photosensitive resin composition of claim 1, it also comprises the silicon diamine compound of following chemical formula 3:
[chemical formula 3]
In chemical formula 3, R
6To R
9Be aliphatic hydrocrbon, phenyl group or the methoxy group of C1 to C12 independently of one another;
D is 1 to 5 integer; And,
K is 1 to 20 integer.
6. the photosensitive resin composition of claim 1; Wherein said diamine compound also comprises at least a p-phenylenediamine (PPD), the m-phenylene diamine, 4 of being selected from, 4 '-oxygen base diphenylamine, 3,4 '-oxygen base diphenylamine, 2; 2-two (4-[4-amino-benzene oxygen]-phenyl) propane, 1; 3-two (4-amino-benzene oxygen) benzene, 1,4-two (4-amino-benzene oxygen) benzene and 2, the compound of 2-two (4-[3-amino-benzene oxygen] phenyl) sulfone.
7. the photosensitive resin composition of claim 1, wherein said acid dianhydride also comprises at least a PMDA, 3,3 '-4 of being selected from; 4 '-biphenyl tetracarboxylic dianhydride, 3,3 ', 4; 4 '-benzophenone tetracarboxylic dianhydride, 4, the two phthalic anhydrides, 4 of 4 '-oxygen base, 4 '-(4; 4 '-isopropyl diphenyl oxygen base) two phthalic anhydrides, 2, the compound of 2 '-two-(3,4-dicarboxyl phenyl) hexafluoropropane dianhydride and ethylene glycol bisthioglycolate dehydration benzenetricarboxylic acid ester.
8. the photosensitive resin composition of claim 1, wherein said diamine compound: the mol ratio of said acid dianhydride is between 1: 0.9 to 1: 1.1.
9. the photosensitive resin composition of claim 1, the weight-average molecular weight of wherein said polyamic acid is 5000 to 300000.
10. the photosensitive resin composition of claim 1, the compound of wherein said photopolymerization comprise the two keys with two photopolymerizations or have (methyl) acrylate compounds of at least one two key and at least one hydroxyl or cycloalkyl groups.
11. the photosensitive resin composition of claim 1, wherein with respect to the said polyamic acid of 100 weight portions, the content of the compound of said photopolymerization is 30 to 200 weight portions.
12. the photosensitive resin composition of claim 1, wherein with respect to the said polyamic acid of 100 weight portions, the content of said photoinitiator is 0.3 to 10 weight portion.
13. the photosensitive resin composition of claim 4, wherein with respect to the said polyamic acid of 100 weight portions, said photocrosslinking sensitizer and curing accelerator content separately are 0.01 to 10 weight portion.
14. the photosensitive resin composition of claim 4; Wherein said fire retardant comprises at least a 2-of being selected from hydroxyethyl methacrylic acid phosphoric acid ester, 2-hydroxyethyl methacrylic acid caprolactone phosphate, 10-(2; The 5-dihydroxy phenyl)-and 10H-9-oxa--10-phospho hetero phenanthrene-10-oxide and 9, the 10-dihydro-9-oxy is assorted-compound of 10-phospho hetero phenanthrene-10-oxide.
15. the photosensitive resin composition of claim 4, wherein with respect to the general assembly (TW) meter of the solid matter except polyamic acid, the content of said fire retardant is 0.1 to 20wt%.
16. the photosensitive resin composition of claim 1; It also comprises at least a N-of being selected from N-methyl-2-2-pyrrolidone N-, N-acetyl group-2-Pyrrolidone, N-benzyl-2-Pyrrolidone, N; The solvent of dinethylformamide, DMAC N,N, dimethyl sulfoxide (DMSO), HMPA, N-acetyl group-epsilon-caprolactams, methylimidazole alkane ketone, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, gamma-butyrolacton 、 diox, dioxolanes, tetrahydrofuran, chloroform and methylene chloride.
17. the photosensitive resin composition of claim 16, wherein with respect to the polyamic acid of 100 weight portions, the content of said solvent is 300 to 700 weight portions.
18. a dry film, it comprises the photosensitive resin composition of one of claim 1 to 17.
19. the dry film of claim 18, it is used to form the coverlay of printed circuit board (PCB).
20. the formation method of patterning, it may further comprise the steps:
Make the dry film exposure of claim 18;
Said dry film is developed.
21. a printed circuit board (PCB), it comprises the cured article of the dry film of claim 18.
22. a flexible PCB, it comprises the cured article of the dry film of claim 18.
23. a semiconductor is used layered product, it comprises the cured article of the dry film of claim 18.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2009-0098282 | 2009-10-15 | ||
| KR20090098282 | 2009-10-15 | ||
| KR1020100044302A KR101443293B1 (en) | 2009-10-15 | 2010-05-12 | Alkali developable photosensitive resin composition and dry film manufactured by the same |
| KR10-2010-0044302 | 2010-05-12 | ||
| PCT/KR2010/007099 WO2011046397A2 (en) | 2009-10-15 | 2010-10-15 | Light-sensitive resin composition and a dry film comprising the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102439521A true CN102439521A (en) | 2012-05-02 |
| CN102439521B CN102439521B (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800076299A Active CN102439521B (en) | 2009-10-15 | 2010-10-15 | Light-sensitive resin composition and a dry film comprising the same |
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| Country | Link |
|---|---|
| US (1) | US8354219B2 (en) |
| JP (1) | JP5393806B2 (en) |
| KR (1) | KR101443293B1 (en) |
| CN (1) | CN102439521B (en) |
| TW (1) | TWI396048B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20110041389A (en) | 2011-04-21 |
| CN102439521B (en) | 2013-07-24 |
| US8354219B2 (en) | 2013-01-15 |
| JP2012514760A (en) | 2012-06-28 |
| JP5393806B2 (en) | 2014-01-22 |
| TWI396048B (en) | 2013-05-11 |
| TW201120570A (en) | 2011-06-16 |
| KR101443293B1 (en) | 2014-09-19 |
| US20110278049A1 (en) | 2011-11-17 |
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